Burner for burning oil fuel



April 7, 1925. 1,533,042

P. SLOPER summa FOR BURNING 011. FUEL Filed Sept. 8, 1924 2 Shee'cS-Szet 1 a 18 .26 5 I 25W f6 m 7 y A 16Min 3 15 13 z April 7, 1925.

P. SLOPER BURNER Fon BURNING on. FUEL F11-ed Sept, 8 1924 2 Sheets-Sheet 2 Patented Apr. 7, 19275.

UNITED STATES' PATENT OFFICE.-

PERGY SLOPER, OF LONDON, ENGLAND.

BURNER son BURNING on. FUEL.

Application led September T o all whom 'it may concern.'

Be it known that PERCY SLOPER, a subject` v naces, boilers and for other purposes, and

to that class of burners in which the fuel oil and air or gas meet just inside the outlet nozzle through which the mixture passesfor burning, and has for its object to construct such a burner wherein theoil is perfectly atomized and which is economical and reliable in use, especially when the burner is turned down toreducethe size of flame andv heating power.

According to this invention I construct the burner in such a manner that the oil emerges into the nozzle from two tubes or z holes in the same plane, and the air or steam necessary for combustion issues from two tubes or holes in another plane and equidistant between the oil tubes or holes. It is important for the lproper working of the burner that the length of the air or steam passages from the controlling valve to the outlet be of exactly the same length and also that the two oil passages should also be of the same length.

My invention will be clearly understood from the following description aided by the annexed drawings which illustrate one example of carrying my invention into effect and in which Figure 1 is a sectional plan, Figure 2 an elevation, Figure 3 a front view (turned through 90 to Figure 1) of a` I burner and Figure 4 a side view and Figure 5 an end viewv of a detail on anl enlarged scale. s Y

In my preferred construction of burner shown on the annexed drawings I em loy a casting 1 in which is formed the oil inlet 2 for connectioiLto the oil reservoir.` The inlet 2 is controlled byv a needle valve 3 and leads to a passageway 4 which branches out into two passageways 5 at an angle to one another. The passageways 5 pass to the front of the casting 1 and discharge upon a flat' portion or seat 6at the base of a depression formed in the front portion of said casting, the discharge .ends 0f the passage- 8, 1924. Serial No. 736,565.

ways 5 being in the same plane drawn through the axis of said depression, and such passageways 5 being of exactly the same length from the needle valve seating 7 to their outlets in the flat portion 6.

In the casting 1 is also formed the coin-v pressed air or steam inlet Scontrolled by another needle valve 9, this inlet leading lto 4a passageway 10 which branches out into two passageways 11 at an angle'in a similar manner to the oil passageways 5, and such passageways lllare4 so arranged that they open on the flat portion 6 in a vertical line at equal distances between the openings of the oil passageways 5. These passageways 11 are exactly the 'same length from the needle valve seating 12 to the. outlets inthe fiat portion 6. y

Secured to in the recess of the casting 1.y

against the fiat portion or seat 6 by ascrew ring 13 or other means is a tube 14 in whichl is positioned a metal cylinder 15 having its forward end 16 coned or curved with the point iattened or cut off as at 17 (Figure 4) and through the cylinder 15 are formed four longitudinal passageways 18, 18, 19 and 19 so positioned that when the member 15 is inserted in the tube 14 and its flat' rear end positioned against the flat portion or seat 6 of the casting 1, the passageways 18, 18 will coincide with the oil passageways 5, and the passageway's 19 will coincide with the air or steam passageways 11 in the casting 1. The passageways 18, 18 and 19,

19 pass through the member 15 and terminate at the coned end 16. Grooves 20, 2O and 21, 21 or recesses are formed in the coned end 16 leading from the passageways 18, 18 and 19, 19 to the flattened end 17 Locating lpins 22, 23 are preferably formed, respectively,-at the rear end of the tube 14 and at the rear end of the member 15 to engage, respectively, in recesses formed in the flat portion or seat 6 of the casting 1 and in the rear end of the tube 14, to ensure that the tube 14 and ,member 15 are properly positioned on the flat portion 6. On to the forward end ofthe tube 14 is secured the burner nozzle 24, the rear or inner side of which is coned to correspond with the cone 16 on the 'member 15., and through the centre of said nozzle 24 is formedA a hole 25 vwhich acts as the outlet for the air or steam and oil. I have found that Vno by Varying the thickness of the metal of the'M hole 25.passes, and consequently the length of the hole 25, I can vary the position of the point where the oil is burnt from the burner The flattened en d -17 of the member 15 is larger in diameter than the hole 25 and a .they reach the space between the flattened-- small space is left between said end and that portion ofthe nozzle within which it fits, which space is equivalent to the point of the cone 16.. In the. space just mentionedv the oil and air or steam mix and are immediately ejected through the hole 25, inthe burner nozzle 24.

l26 is a washer between the rear end of the member and theiiat portion or seat 6 and 27 a gauze strainer.

The oil and air or steam do not meet until end 17 of the member l5 and the inside of thev burner nozzle .24 and then immediately pass through the. hole to .the outside for burning.- By making the length of the passageways 11 .for the air or steaml of' eX- l actly the same'length, and also the passageways V15 for Vthe oil of exactly the same length perfect economical burning of the oil without drip is obtained, especially when either the valve 3 or the valve 9, orbothof them, are partially closed for reducing the heating power of the burner.

The member. 15 has4 a flange at its rear end which, when the'burner is assembled, fits in 1. An oil burner comprising a 'casting havl ing'a seat at its forward end and havingan 'oil inlet and a plurality of passages extending from said oil inlet to said seat, said casting `also having an inlet for a combustion-supporting gas' and a lurality of pas# sages extendingfrom said) latter inlet to said seatat points .equidistant from the points of discharge of said oil-inlet'passages a. member having its rear end bearing against said seatand having its forward en formed .as a truncated cone, said member.

also being!- formed rwith a' plurality of passa es aving their rear ends aligning with t e outlet ends of said oil-inlet??1 p.

and of .said sainlet passages an 1 theirforwar ends terminatmgin the conical. part of theforwardend of. said member, and a burner nozzle secured to lsaid casting in advance o-f the forward end of said member, saidnozzle having a conical recess `my hand. in

shaped to substantiallyl conform with and to receive the forward end of said member and having a discharge passage co-axial with said conical recess.

2. An oil burner comprising a casting having at its forward end a circular depression of which the base forms a fiat seat, said casting having an oil inlet and a lurality of passages' extending from said oil-inlet and terminating in said fiat seat, said casting also having an inlet for. combustion-supporting gas and a tending from sai last-name inlet. and

terminating in said fiat vseat at pointsfequidistant from the outlets of said oil-inlet paages, a cylindrical member of smaller diameter. than said circular depression having its rear end flattened and bearing against said flat seat and having its. forward end plurality of (passages ex-v formed as a truncated cone, said cylindricalf-v A member also havin tudinal passages o which the rear ends 'align with the outlet ends of said oil and gas passages and the forward ends terminate in t e conicalv part of the said member, a sleeve surrounding said member and havin its rear end resting against thebase gf sai circular depression, sald sleeve having means associated with said'casting and with said cylindrical member to maintain the passages of the latter in alignment with the outlet ends of said oil and gas passages, and a burner nozzle secured tothe vforward end of p said sleeve, said burner nozzle havin a conlcal depression shaped to substantla ly conform with and receive the forward end of said cylindrical member and also having a discharge passage co-axial with said conical recess.

-3. vAn cil burner according to claim 1 wherein the truncated cone-shaped forward end of the member is formedy withlcngiltudinal grooves with each of which: one of the passagwaysrpf said member communicates. 4. 011 burner accordin to claim 1, wherein the assag'es from t e voil-inlet `to the seatv of e casing are ofequal length" and the `aasages from the gas-'inlet to the seatv of t -castingfare of egual length..

5.2 An oil burner accordi to' claim 2, wherein the rear Aend ofthes eeve engages with saidA sleeve and -with said casting se- -cures said cylindricalY member in place.

Y6. An oil burner according to .claim 2 av plurality of longi-f .the cylindrical member vadjam`-ant the rear end 1 vof the latterl and wherein means associated wherein the burner nozzle is detachably connected to the for-Ward end ofthe sleeve.

In testimon .whereof 'I have hereunto set e prence of two subscribing y. PERCY SLOPER. W'iirll.v 'i i RUsenLL H. Rimane,

R. E. Scusa.-

witnesses. 

